KR930001880A - Unitary Absorption Structural Material - Google Patents

Abstract

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Description

Unitary Absorption Structural Material

Since this is an open matter, no full text was included.

1 is a perspective view of a unitary fluid absorbing composite structure constructed in accordance with the present invention,

FIG. 2 is an ideal cross-sectional view of the absorbent structural material shown in FIG. 1, showing in more detail the internal relationship at the fiber-level between the transfer layer and the storage layer of the absorbent structural material,

3 is a perspective view of a co-rolling apparatus used to make a unitary fluid absorbing composite structure according to the present invention,

4 is a fragmentary perspective view of a unitary fluid absorbing composite structure according to the present invention.

Claims (58)

A transport layer of virtually hydrophilic fibers, and a storage layer of supercarbaceous material, wherein the density of the storage layer is higher than the density of the transport layer, wherein the layers contain a supercarbaceous material interspersed with hydrophilic fibers. A unitary fluid absorbing composite structure bonded through a diffusion interface that contains a shared, three-dimensional boundary region containing a boundary region that satisfies the conditions of intimate fluid-transfer relationship between the layers. The unitary fluid absorbing composite structure of Claim 1, wherein the hydrophilic fibers are bonded to the peat material at the three-dimensional boundary region by hydrogen bonding. 2. The unitary fluid absorbing composite structure of Claim 1 wherein the hydrophilic fibers and the carbonaceous material are mechanically linked at the three-dimensional boundary region. The unitary fluid absorbing composite structure of claim 1, wherein the absorbent structure is mechanically softened to increase its flexibility. The unitary fluid absorbing composite structure of claim 4, wherein the absorbent structure is mechanically softened by a method selected from puff-embossing and fine pleating. The unitary fluid absorbing composite structure of claim 1 wherein the boundary region has a positive density gradient of the peat material from the transport layer to the storage layer. The unitary fluid absorbing composite structure of Claim 1 wherein the transfer layer comprises fibers treated with a surfactant. The process of claim 1 wherein the transfer layer comprises sulfate pulps, sulfite pulp, stripped pulp, bleached pulp, unbleached wood pulp, kraft wood pulp, heat-machined pulp, chemical thermal machined pulp, chlorine process. A unitary fluid absorbing composite structure comprising a material selected from wood pulp bleached by and wood pulp bleached by hydrogen peroxide. 2. The unitary fluid absorbing composite structure of Claim 1 wherein the transfer layer comprises a mixture of cellulose-based pulp and thermoplastic fibers. The unitary fluid absorbing composite structure of claim 1 wherein the thickness of the transfer layer is from about 0.03 to about 0.75 inches as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1, wherein the thickness of the transfer layer is from about 0.05 to about 0.50 inches as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1, wherein the thickness of the transfer layer is from about 0.08 to about 0.25 inches as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1, wherein the basis weight of the transfer layer is from about 15 to about 500 g / m ² . The unitary fluid absorbing composite structure of claim 1, wherein the basis weight of the transfer layer is from about 100 to about 225 g / m ² . The unitary fluid absorbing composite structure of claim 1, wherein the basis weight of the transfer layer is from about 125 to about 175 g / m ² . The unitary fluid absorbing composite structure of claim 1 wherein the density of the delivery layer is from about 0.05 to about 0.45 g / cc as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1 wherein the density of the transfer layer is from about 0.1 to about 0.25 g / cc as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1 wherein the density of the transfer layer is from about 0.12 to about 0.15 g / cc as measured at 0.05 psi pressure. 2. The storage layer of claim 1, wherein the storage layer comprises rayon fibers, polyester fibers, nylon fibers, acrylic fibers, wood pulp fibers, synthetic wood pulp fibers, thermo-machined pulp fibers, chemical thermomachined pulp fibers, mechanical grinding A unitary fluid absorbing composite structure comprising a supercarbaceous material mixed with a material selected from pulp fibers, polymers, surfactants and superabsorbents. The unitary fluid absorbing composite structure of claim 1, wherein the storage layer has a thickness of about 0.05 to about 0.75 inches as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1, wherein the storage layer has a thickness of about 0.08 to about 0.5 inches as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1 wherein the storage layer has a thickness of about 0.12 to about 0.25 inches as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1, wherein the storage layer has a basis weight of about 25 to about 700 g / m ² . The unitary fluid absorbing composite structure of claim 1, wherein the storage layer has a basis weight of about 100 to about 300 g / m ² . The unitary fluid absorbing composite structure of claim 1, wherein the storage layer has a basis weight of about 125 to about 200 g / m ² . The unitary fluid absorbing composite structure of claim 1 wherein the storage layer has a density of about 0.05 to about 0.5 g / cc as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1 wherein the storage layer has a density of about 0.10 to about 0.35 g / cc as measured at 0.05 psi pressure. The unitary fluid absorbing composite structure of claim 1 wherein the storage layer has a density of about 0.20 to about 0.30 g / cc as measured at 0.05 psi pressure. Providing a layer of hydrophilic fibrous material having a lower density than the layer of peat material on the layer of carbonaceous material, wherein the three-dimensional boundary region containing the carbonaceous material interspersed with the hydrophilic fibrous material between the layers Forming a close fluid-transfer relationship between the layers), thereby improving the fluid absorption properties of the layer of peat material. 30. The method of claim 29, wherein the hydrophilic fibers are bonded to the peat material by hydrogen bonding in the three-dimensional economic domain. 30. The method of claim 29, wherein the hydrophilic fibers and the carbonaceous material are mechanically linked at three dimensional boundary regions. 32. The method of claim 30 including mechanically compressing the layers to allow the layers to penetrate each other and to release water from the layers to form hydrogen bonds. 33. The method of claim 32, wherein the moisture content of the layer of hydrophilic fibrous material is at least about 7% based on the weight of the layer of hydrophilic fibrous material that does not contain moisture prior to mechanical compression. 33. The method of claim 32, wherein the moisture content of the layer of peat material is at least about 11% unloaded based on the weight of the layer of peat material that does not contain moisture prior to mechanical compression. 30. The method of claim 29 comprising applying a mechanical softening process to the layers to increase the flexibility of the layers. 36. The method of claim 35, wherein the mechanical softening process is selected from puff-embossing and microwrinkling. 27. The hydrophilic fibrous material of claim 25, wherein the hydrophilic fibrous material comprises sulfate pulp, sulfite pulp, stripped pulp, bleached pulp, unbleached wood pulp, kraft wood pulp, heat-machined pulp, chemical thermomachined pulp, chlorine A material selected from wood pulp bleached by the process and wood pulp bleached with hydrogen peroxide. 30. The method of claim 29 wherein the layer of hydrophilic fibrous material comprises fibers treated with a surfactant. 30. The method of claim 29, wherein the layer of hydrophilic fibrous material comprises a mixture of cellulose-based pulp and thermoplastic fibers. 30. The shell material of claim 29, wherein the shell material layer comprises rayon fibers, polyester fibers, nylon fibers, acrylic fibers, wood pulp fibers, synthetic wood pulp fibers, heat-machined pulp fibers, chemical thermomachined pulp fibers, mechanical Mixed with a material selected from pulp fibers, polymers, surfactants and superabsorbents ground into A hydrophilic fibrous layer having a moisture content of at least about 7% based on the weight of a hydrophilic fibrous layer containing no moisture, on a supercarbon material layer having a moisture content of at least about 11% based on the weight of the moisture-free peat material layer. Providing moisture, removing moisture at the interface between the layers to form hydrogen bonds between the hydrophilic fiber and the layer of carbonaceous material, and coupling the layers to intimately transfer the fluid. To produce a unitary fluid absorbing composite structure. 42. The method of claim 41 including mechanically compressing the layers to allow the layers to penetrate each other and to release water from the layers to form a sorghum bond. 42. The method of claim 41 comprising applying the unitary fluid absorbing composite structure to a mechanical softening process to increase its flexibility. 44. The method of claim 43, wherein the mechanical softening process is selected from puff-embossing and microwrinkling. 42. The process of claim 41 wherein the hydrophilic fibrous layer is subjected to sulfate pulp, sulfite pulp, stripped pulp, bleached pulp, unbleached wood pulp, kraft wood pulp, heat-machined pulp, scientific thermal machined pulp, chlorine process. A material selected from wood pulp bleached by and wood pulp bleached by hydrogen peroxide. 42. The method of claim 41 wherein the hydrophilic fibrous layer comprises fibers treated with a surfactant. 42. The method of claim 41 wherein the hydrophilic fiber layer comprises a mixture of cellulose-based pulp and thermoplastic fibers. 42. The layer of claim 41, wherein the layer of peat material is rayon fiber, polyester fiber, nylon fiber, acrylic fiber, wood pulp fiber, synthetic wood pulp fiber, heat-machined pulp fiber, chemical thermal machined pulp fiber, mechanical Mixed with a material selected from pulp fibers, polymerizers, surfactants and superabsorbents ground into A fluid permeable cover sheet, a back sheet of fluid impermeable material, and (a) a transport layer of hydrophilic fibers, and (b) a storage layer of supercarbon material, wherein the density of the storage layer is higher than the density of the transport layer. And the layers define a shared three-dimensional boundary region containing hydrocarbon fibers scattered throughout, the boundary region satisfying the conditions of intimate fluid-delivery relations between the layers. Disposable fluid absorbent article comprising a unitary fluid absorbent composite structure bonded in an adjacent relationship through an interface. 50. The disposable fluid absorbing article of claim 49, wherein the hydrophilic fibers are bonded to the peat material by hydrogen bonding in the three-dimensional boundary region. 50. The disposable absorbent article of Claim 49 wherein the hydrophilic fibers and the carbonaceous material are mechanically linked at the three-dimensional boundary region. 50. The disposable fluid absorbing product of claim 49, wherein the product is selected from sanitary napkins, diapers, incontinence pads, adult briefs, and wound bandages. 50. The disposable fluid absorbing article of claim 49, wherein the absorbent structural material is mechanically softened to increase its flexibility. 54. The disposable fluid absorbing article of claim 53, wherein the absorbent structural material is mechanically softened by a process selected among puff-embossing and microwrinkling. 50. The process of claim 49, wherein the hydrophilic fibers are used in sulfate pulp, sulfite pulp, stripped pulp, bleached pulp, unbleached wood pulp, kraft wood pulp, heat-machined pulp, chemical thermomachined pulp, chlorine process. Disposable fluid absorbent product selected from wood pulp bleached by and wood pulp bleached by hydrogen peroxide. The disposable fluid absorbing article of claim 49, wherein the delivery layer comprises fibers treated with a surfactant. 50. The disposable fluid absorbing article of claim 49, wherein the delivery layer comprises a mixture of cellulose-based pulp and thermoplastic fibers. 51. The storage layer of claim 49, wherein the storage layer comprises rayon fibers, polyester fibers, nylon fibers, acrylic fibers, wood pulp fibers, synthetic wood pulp fibers, thermo-machined pulp fibers, chemical thermally processed pulp fibers, mechanically Disposable fluid absorbent article comprising a supercarbon material mixed with a material selected from milled pulp fibers, polymers, surfactants and superabsorbents. ※ Note: The disclosure is based on the initial application.